Machine for operating on shoe parts



. July 14, 1936. c. E. HOOD V MACHINE FOR OPERATING ON SHOE PARTS Filed Dec.

12, 1934 2 Sheets-Sheet 1 July 14, 1936. c. E. HOOD MACHINE FOR OPERATING ON SHOE PARTS 2 Sheets-Sheet 2 Filed Dec.

Patented July 14, 1936 UNITED STATES PATENT Appiieatmn December 2, 1934, Serial No. 757,181

"1 Cla m This invention relates to gaging mechanisms and is herein illustrate and described as embodied in a skiving machine of thetype illustrated in United States Letters Patent No.

-1,382,689, ranted June 28, 1921, upon the application of W. C. Stewart. The machinerdisclosed in that patent is used iorskiving the shank portions of outsoles at each side of the soles. It is provided with a matrix roll and a feed roll between which the soles are fed past a skiving knife. The feed roll pressesthe cen-. tral portion of the sole into a recess which is formed in the matrix roll, and the shape of this recess controls the deformation of the sole while it is being fed and thus determines the position and extent of the cuts which are made .by the skiving knife. In order properly to position the sole in relation to the recess of the matrix roll the machine is provided with a gage mechanism for centering the forepart of the sole and also with a gage mechanism for centering the heel end of the sole. Each of these centering gage mechanisms consists of a pair of pivotally mount. ed gage members which contact with the opposite lateral edges of the sole and which are urged together by a spring. These members are forced apart when a sole is entered between them and their movements are coordinated by a pair of gear segments which are in mesh with each other, each of the gear segments being secured to one of the gage members. The gearse gments' of the above-identified patented construction have equal pitch diameters and it is evident that regardless of the width of the portion of the sole which is entered between the gage members the common center line between the gage members will always occupy a fixed position.

It is an object of the present invention to provide an improved gaging mechanism of the type above referred to. V

When soles of difierent sizes but of the same style are presented in properly aged relation to the recess of the matrix roll, the difierence in size presents a greater variation on the inner edge of the forepart of thesole than upon the outer edge. It is therefore desirable to provide for a greater movement of the forepart gage member which contacts with the inner edge of the sole than for the member which contacts with the outer edge. In accordance with a feature of the invention, and in order to provide for greater movement of one or the members than the other, the gear which is secured to one gage member has a greater pitch diameter than the gear which is secured to the other gage member. :With this, construction the. midpoint between the gage members, or, as it is ire-.- quently called, the common center line, will not occupy a fixed position but will be displaced in accordance with the degree of separation of the gage members when a work piece is inserted be.- tween them. Snch shifting of the common center line in most cases is sufi-icient to adapt 1 2 forepart centering gage mechanism to soles of different size. without the need oi ateral b dili adjustment of the gageme han sm. S vin n s oi the type under mast tis.- tion a e frequ ntly used for operatin -1. mm b19015 soles. The outline of such a sole is arbitrary has no necessary relation to the outline of what v ntu flyw be the finishe .0 mended @16- For the same size and style of solethere m y be considerable variation in the on ines pi dire ferent lots of block soles. Such varia ions 9i out.- line usually involve a shifting of the center ine of the block sole with reference to the truee ter line of the :sole, that is, the center line of the sole in its ultimate rounded 19.111 .15 sirable, therefore,- to proyide for adjusting the centering age mechanism to enable the o era or-919mm to position av blocksole in relation to the matrix re ss in such amannerth t the sol w l be skiv in p oper relation to what ventua ly w ll. become its rounded outl ne,- With this purpose in view means a DKOY QQQ- r adju tin 2 position o ne .o h sa e members indfib nd may of the oth r t he resists 0 the common center l ne,- .I th s il ystratgd p tion, as has already beamed-ete ut th more 11 5 Of Eh? ease l lfimb rs a e fi Q 'diilef fi-d b intermeshing gears. In accordance with a iea}, ime at th i v ntion, on Q th sa e mem e s 'p v t y meunt oa ia ati n t o e g a s n i s u ed to th a b a 6: vice which P v e r t e angu ar ad u ment o the a an of h age membe lativel o e hothe chant t piv ta meet n The oth r ease m b i di ec ly same?! b the ear wh h c n ro s its mo emen 25 reas n th provision for relative angular adjliiitm llli 1 B- tweell n O P i eas members .51 4 t 9.. hating g ar that c se member an readil be a justed d pendent the e her eas II-9.1 ber.

A further'feature of the invention consists in the provision of an extension to each of the forepart g n m s to e abl the format gaging members to accommodate soles of unusual 1ength.- Such extensions partly embraee the matrix roll and enable the gaging members to contact with the work on both sides of the bite of the rolls. Provision is made for readily detaching these extensions when they are not needed.

In addition to the features of invention above referred to the present invention also consists in certain features of construction and combinations of parts hereinafter described and claimed, the advantages of which will be obvious to those skilled in the art from the following description.

The various features of the invention are illustrated in the accompanying drawings, in which Fig. 1 is a vertical sectional view, taken on the line II of Fig. 2, of a portion of a shank skiving machine embody the present invention;

Fig. 2 is a plan View of the parts shown in Fig. 1; and

Fig. 3 is a view in perspective of a portion of the machine.

The invention is illustrated as embodied in a shank skiving machine of the type disclosed in Letters Patent No. 1,382,689 above referred to. Thismachine, as shown in Fig. l, is provided with a matrix roll Ill mounted upon a shaft I2, and also with a feed roll comprising a plurality of serrated disks I4 mounted upon a shaft [6. The matrix roll shaft I2 is journaled at its ends in bearing blocks l8 each of which is slidably mounted for vertical adjustment between a pair of forks 20 extending upwardly from a frame 22. The feed roll shaft [6 is journaled at its ends in a pair of hanger arms 24 which are pivotally mounted upon pins 26 secured in the frame 22. The hanger arms 24 are urged upwardly by spring pressure to a limited position determined by adjustable stops which engage extensions 27 on the hanger arms. Extending close to the bite of the matrix and feed rolls is a skiving knife 26 which is mounted upon a bed plate 28 secured at its ends in the frame 22. Slidably mounted in a carriage 30 is a block 32. The block 32 may be adjusted in the carriage 30 toward and from the matrix and feed rolls by a mechanism indicated generally by the numeral 34. A back gage 36 for engaging the rear end of thesole is slidably mounted upon the block 32 for adjustment toward and from the matrix and feed rolls and is secured in adjusted position relatively to the block 32 by a screw 38. The block 32 also carries a heel centering gage mechanism which will presently be described. Extending from each end of the frame 22 is a bar 40 upon which is secured a block 42 which carries a fore-part centering gage mechanism presently to be described.

A sole blank herein shown as a block sole S is shown supported by the carriage 30 with the ball portion of the blank extending between the matrix roll and the feed roll in readiness to be acted upon by the skiving knife. The sole blank is located lengthwise with reference to the matrix roll by means of the back gage 36. A guide plate 31 prevents the heel end of the sole, as it is being inserted, from riding up over the back gage. The sole blank is positioned laterally with respect to the matrix roll by the above-mentioned centering gages. The matrix and pressure rolls cooperate to feed the sole blank past the skiving knife, while the matrix acts upon the opposite margins of the shank portion of the blank to offset these portions from the plane of the sole, thereby deflecting them into the plane of the skiving knife so that they will be reduced or beveled as the sole blank is fed past the knife. The knife cuts from the ball line toward the breast line.

As shown in Fig. 2, the machine is arranged to operate simultaneously upon a right and a left sole, the sole S already mentioned being a right sole (which is seen inverted in Fig. 2) while a left sole is indicated by the reference character S. The matrix roll I0 is designed to operate upon the right sole S, and the shaft I2 is provided with an additional matrix roll l6 for operating upon the left sole S. As also shown in Fig. 2, separate sets of gaging mechanisms are provided for right and left soles.

The machine, as so far described, is substantially the same in construction and arrangement, and has substantially the same mode of operation as the machine disclosed in the above-mentioned Letters Patent No. 1,382,689 and reference may be had to that patent for details of construction and operation not fully set forth herein.

In- Fig. 2 the outline of the right block sole is indicated by the full line S. while the outline of what is eventually to become the finished or rounded right sole is indicated by the broken line R. The outline of the left block sole is indicated by the full line S, and the outline to which the left block sole eventually will be rounded is indicated by the broken line R. For any given size and style of shoe the outline R or R of the rounded sole will always be the same, and it is in relation to this outline that the sole blank should be gaged with reference to the matrix roll. However, the outline S or S of the block sole has no necessary relation to the outline R or R. of the finished or rounded sole, and for any one style and size of sole there may be considerable variation in the outline S or S. It is therefore necessary to center the block sole, however arbitrary may be its outline, with reference to what will eventually be the outline of the finished sole. The gaging mechanism however must contact with the tangible edges of the actual block sole. In order to enable the operator to allow for variations in the outline of the block sole, the illustrated machine is provided with an improved form of centering gages.

The heel centering gages are alike for both right and left soles, and the same reference characters will be used in describing corresponding parts of each of them. Each heel centering gage comprises a pair of arms 44 and 46, each of which arms has a work engaging portion 48 at its for ward end. The work engaging portions 48 engage the opposite edges respectively of the heel portion of the block sole S or S. The arm 44 is pivotally mounted upon a pin 50 and has a bell crank extension 52 upon which is formed a gear segment 54. The arm 46 is provided at its rear end with a pair of ears 56 by which it is pivotally mounted upon a pin 58. The pins 50 and 58 are secured in the gage block 32. Separate gage blocks 32 are provided for the heel gages for right and left soles. Pivotally mounted upon the pin 58 between the ears 56 is an arm 60 carrying a gear segment 62 which is in mesh with the gear segment 54. The arm 60 has a bell crank extension 64. Upon the arm 64 is pivotally mounted a block having a pair of upstanding ears 66. Rotatably mounted upon an extension of the arm 46 is an upstanding pin 68. A screw 10 which is threaded transversely through the pin 68 has a shank portion which is journaled in the ears 66. A thrust collar 12 which is secured upon the shank of the screw 16 is retained between the ears 66 and thus holds plane portion of the work engaging member 82. The extension I34 is provided with a tongue I38 which is received between a pair of ears I40 extending from the work engaging member 82. A locking pin I42 havinga knurled head, as shown in Fig. 2, extends through theears I40 and the tongue I38 to secure the extension I34 to the member 82. The extension I34 is provided with a pair of shoulders I44 which engage the respective ends of the ears I40 to prevent rotation of the extension I34 about the pin I42. The pin I42 is normally held in locking position by a spring I46 which is anchored in the member 82 by a pin I48. The knurled head on the locking pin I42 facilitates withdrawal when removal or replacement of the extension I34 is desired. A similar extension I50 is provided upon the gage member 84, and the various parts of the extension I50 are numbered to correspond to similar parts on the extension I34.

The centering gage mechanism for the forepart of the block sole S is mounted on a gage block 42' which is similar to the block 42 and which is similarly supported. All portions of the centering gage mechanism for the forepart of the block sole S are similar to corresponding portions of the centering gage mechanism for the forepart of the block sole S and are similarly numbered. The two sets of gage mechanisms are identical, except for a right and left reversal to enable them to operate upon right and. left soles. As seen in plan view (Fig. 2) either mechanism corresponds to a mirror image of the other.

It will be observed that when several sizes of soles of the same style are superimposed the larger sizes overlap the smaller sizes by a much greater margin at the inner edge of the shank than at the outer edge. That is, if a particular size of sole is properly positioned in relation to the matrix roll, then when a larger sized sole is inserted between the forepart gages, the inner gage member 82 must travel a greater distance than the outer gage member 84 in order properly to position the larger sized sole. While this is particularly true of rounded soles, it is also to some extent true of block soles, and, inasmuch as the illustrated machine is intended to be used for both types of soles, this consideration has been taken into account in the construction of the improved forepart gages. Accordingly, provision has been made for the gage member which contacts with the inner edge of the forepart of the shoe, for example the gage member 82 in the illustrated machine, to travel a greater distance than the gage member 84 which contacts with the outer edge. Such variation of travel of the two gage members in the illustrated machine is accomplished by providing gear segments of different pitch diameters. In the illustrated machine the pitch diameter of the gear segment 98 about the axis of the pin 88 is substantially one third as great as the pitch diameter of the: gear segment 96 about the axis of the pin 92. Assuming that the gage members 82 and 84 have been adjusted by turning the head IIO to position properly a sole of a given size, it will be apparent that when a larger sized sole of the same style is inserted between the gage members the gage member 82 will travel substantially three times as far as the gage member 84. The result will be that the larger sized sole will still be properly centered in relation to the matrix roll without any need of readjusting the gage members by turning the head IIO.

As previously stated, the bearing blocks I8 of the matrix roll shaft are slidably mounted for vertical adjustment in the forks 20. Such adjustment is effected by wedge blocks I52 (Fig. 1), a pair of which are provided to bear against the top of each of the bearing blocks I8. The bearing blocks I8 are urged upwardly against the wedge blocks I52 by springs (not shown). The wedge blocks I52 are forced downwardly or released upwardly to obtain a desired setting of 10 the matrix roll relatively to the skiving knife and the feed roll by a mechanism similar to that disclosed in the above-mentioned Letters Patent No. 1,382,689. This mechanism is operated by a hand wheel I54 (Fig, 3) by which the adjustment is ef- 15 fected.

The hand wheel I54 of the illustrated machine has formed in its periphery a groove I56, in which is slidably mounted a split ring I58 of resilient metal which may readily be sprung into the 20 Knobs 25 cient friction to hold it against accidental slip- 30 ping; the friction is not great enough, however, to prevent the operator from turning the ring easily.

When a batch of soles of the same style but of different sizes are to be skived, the operator in- 35 serts a sole of the largest size between the centering gages and then, without reference to the scale markings, adjusts the matrix roll upwardly or downwardly, by turning the hand wheel I 54, to a position such as will enable a skiving cut of proper depth to be made for that sole. Then, without moving the hand wheel, he turns the ring I58 until the scale marking corresponding to the size of that particular sole registers with the pointer I62. The scale markings may thereafter be relied upon to indicate proper adjustments for all sizes of that style. Whenever a batch of soles of a different style are to be operated upon, the ring I58 is similarly shifted to give proper indications for the various sizes of that particular style.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. A gaging mechanism comprising a pair of gage members, a pivotal mounting for each of said gage members, and a gear secured to each of said gage members, said gears being in mesh with each other, and one of said gears having a greater pitch diameter than the other, whereby a movement of one of said gage members about its 60 pivotal mounting will cause a greater or less movement of the other gage member.

2. A gaging mechanism comprising a pair of gage members adapted to receive a work piece between them, a pivotal mounting for each of 65 work iece 3. A gaging mechanism comprising a pair of gage members, a pivotal mounting for each of said gage members, a gear secured to one of said gage members, a gear rotatable about the pivotal mounting of the other gage member, and means for securing the second mentioned gear to the other gage member, said securing means being constructed and arranged for adjustment of the angular positions of the gear and the gage member relatively to each other about the pivotal mounting.

4. A gaging mechanism constructed and arranged to receive a work piece between them, a pivotal mounting for each of said gage members, resilient means for urging said gage members toward each other, a gear segment secured to one of said gage members, a gear segment fulcrumed about the pivotal mounting of the other gage member, and means for securing the second mentioned gear segment to the other gage member, said securing means being constructed and arranged for adjustment relatively to each other of the angularpositions of the gear segment and the gage member about the pivotal mounting to enable the mid-point between the gage members to be varied.

5. In combination, a pair of rolls constructed and arranged to engage opposite sides of a work piece, and a gage extending partially around one of said rolls and having portions adapted to engage the edge of the work piece forwardly and frearwardly respectively of the bite of said rolls.

6. In combination, a pair of rolls constructed and arranged to engage opposite sides of a WOIK piece, and a gage pivotally mounted on one side of the bite of said rolls and extending partially around one of said rolls, said gage having a portion adapted to engage the edge of the work piece on the opposite side of the bite of said rolls.

'7. In combination, a pair of rolls constructed and arranged to engage opposite sides of a work 'piece, and a pair of gages each pivotally mounted on the same side of the bite of said rolls for engaging opposite edges respectively of a work piece, each of said gages extending partially around one of said rolls and having work-engaging faces located on opposite sides respectively of the bit of said rolls.

8. A machine for operating upon soles having, 'in combination, a roll engageable with a surface 'of a sole, means for supporting a sole against said roll, and a pair of centering gages for engaging opposite edges respectively of a sole, each of said gages extending partially around said roll and having a work engaging face on each side of said roll.

9. A machine for operating upon soles, having in combination, a roll engageable with a surface 'of a sole, means for supporting a sole against said roll, a pair of centering gages for engaging opposite edges respectively of a sole, each of said gages extending partially around said roll and having a work-engaging face on each side of said roll, pivotally mounted arms upon which said gages are supported, and means for holding said gages with their work-engaging faces in parallel relation in all positions of said arms.

10. A machine for skiving sole edges comprising a matrix roll, a feed roll adapted tosupport a sole against said matrix roll, a skiving knife having its edge positioned close to the bite of said rolls, and a pair of centering gages for engaging opposite edges respectively of the sole, each of said gages extending partially around said matrix roll and having a work-engaging face on each side of said matrix roll.

11. A machine for skiving sole edges, comprising a matrix roll, a feed roll adapted to support a sole against said matrix roll, a skiving knife having its edge positioned close to the bite of said rolls, a pair of centering gages for engaging opposite edges respectively of the sole, said gages extending close to the bite of said rolls, and an extension detachably secured to each of said gages and extending partially around said matrix roll to control the position of a sole at a locality beyond the matrix roll. 7

12. A machine for skiving sole edges, comprising a matrix roll, a feed roll adapted to support a sole against said matrix roll, a skiving knife having its edge positioned close to the bite of said rolls, a pair of centering gages for engaging opposite edges respectively of the forepart of a sole,

a pair of centering gages for engaging opposite edges respectively of the rear portion of the sole, and means for adjusting a gage member of one pair independently of the other gage member of that pair to vary the common center line of that pair of gages.

13. A machine for skiving sole edges, comprising a matrix roll, sole feeding means constructed and arranged to support a sole against said matrix roll, a skiving knife in operative relation to said matrix roll and said feeding means, and means for adjusting the position of said matrix roll relatively to said skiving knife, said adjusting means including a hand wheel, a fixed pointer, and a member having scale markings which cooperate with said pointer to indicate the adjustment of said matrix roll for various sizes of soles, said indicating member being adjustably mounted upon said hand wheel toenable the scale markings to indicate proper size adjustments of the matrix roll for soles of various styles.

14. In a machine for skiving sole edges, skiving means, means for adjusting said skiving means to accommodate soles of varying sizes, and means for indicating the proper setting of said adjusting means according to the size of the soles to be skived, said indicating means being adjustable to enable difierent settings of said adjusting means to be obtained for a single size indication, thereby facilitating the adjustment of the skiving means for operations upon soles which are of different styles and which, by reason of the differences of style, require different settings of the adjusting means for the same size of sole.

CHARLES E. HOOD. 

